Table 2.

Numbers of ash trees as street, park, and private trees per 1,000 residents as reported by the responding communities. Estimated total numbers of ash street, park, and private trees in four Midwest states adjusted for total population.

Item	Street Tree Ash	Park Ash	Private Ash
Median ash/1,000 residents	51.4	8.4	156.1
Mean/1,000 residents	60.0	29.9	331.7
Standard deviation	52.4	63.9	469.2
90% Confidence interval	51.7, 68.2	19.2, 40.7	238.2, 425.2
Number of Responses	111	97	70
Four-state Tree Totals ^{^z} (Median-based)	1,737,441	283,940	5,276,546
Four-state Tree Totals ^{^y} (Mean-based)	2,028,141	1,010,690	11,212,238

↵^zMedian-based totals = median trees per 1,000 residents * (four-state population/1,000 residents)
↵^yMean-based totals = mean trees per 1,000 residents * (four-state population/1,000 residents)